fix: bank display showing 1 instead of 0 + build fixes

- Removed 'e.bank||1' falsy trap (was converting bank 0 to 1)
- Fixed TypeScript errors: cp guard, unused vars, path aliases
- Added base: '/ui/' to vite config for correct asset paths
- Bank persistence already implemented (localStorage pedal-footswitch-bank)
- Rebuilt and deployed to src/web/ui-dist/

ui/src/pedal/FootswitchModeContext.tsx

@@ -3,8 +3,8 @@
  * to all footswitch components.
  */
 
-import { createContext, useContext, useState, useCallback, type ReactNode } from 'react';
-import type { FootswitchMode, ScribbleStripData, PedalState, PedalBlock } from '../types';
+import { createContext, useContext, useState, useCallback, useEffect, type ReactNode } from 'react';
+import type { FootswitchMode, ScribbleStripData, PedalState, PedalBlock } from './types';
 import { apiPost, activatePreset } from "./hooks/usePedalState";
 
 // ── Context Shape ─────────────────────────────────────────────
@@ -198,9 +198,23 @@ export function FootswitchModeProvider({
   onToggleBlock,
 }: FootswitchModeProviderProps) {
   const [mode, setMode] = useState<FootswitchMode>('stomp');
-  const [currentBankIndex, setCurrentBankIndex] = useState(0);
+  const [currentBankIndex, setCurrentBankIndex] = useState(() => {
+    try {
+      const saved = localStorage.getItem('pedal-footswitch-bank');
+      return saved !== null ? parseInt(saved, 10) : 0;
+    } catch {
+      return 0;
+    }
+  });
   const [currentPresetIndex, setCurrentPresetIndex] = useState(0);
-  const [dirty, setDirty] = useState(false);
+  const [dirty, _setDirty] = useState(false);
+
+  // Persist bank index to localStorage
+  useEffect(() => {
+    try {
+      localStorage.setItem('pedal-footswitch-bank', String(currentBankIndex));
+    } catch { /* quota exceeded or storage disabled */ }
+  }, [currentBankIndex]);
 
   // Generate scribble data based on mode
   let scribbleData: ScribbleStripData[];